Why do we live in a Riemannian space time ?
| dc.creator | Scipioni, Roberto | |
| dc.date | 1999-10-29 | |
| dc.date.accessioned | 2026-07-07T03:33:40Z | |
| dc.date.available | 2026-07-07T03:33:40Z | |
| dc.description | We start from the pure Einstein-Hilbert action in Metric Affine Gravity, with the orthonormal metric. We get an effective Levi-Civita Dilaton gravity theory in which the Dilaton field is related to the scaling of the gravitational coupling. When the Weyl symmetry is broken the resulting Einstein-Hilbert term is equivalent to the Levi-Civita one, using the projective invariance of the model, the non-metricity and torsion may be removed, so that we get a theory perfectly equivalent to general relativity. This may explain why low energy gravity is described by a Riemannian connection. | |
| dc.description | 9 pages, Latex | |
| dc.identifier | https://arxiv.org/abs/gr-qc/9910110 | |
| dc.identifier | http://arxiv.org/abs/gr-qc/9910110 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/36662 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | Why do we live in a Riemannian space time ? | |
| dc.type | text |